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Flagship Pioneering Inc.
Period ended Jun 30, 2026 · Latest filing Aug 14, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Jun 30, 2026: $1,539,910,719
More quarters will appear as history becomes available.
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- GENERATE BIOMEDICINES INC · COM SHS · 370920100 · shares: $1,057,295,483
- MODERNA INC · COM · 60770K107 · shares: $324,389,395
- SANA BIOTECHNOLOGY INC · COM · 799566104 · shares: $87,256,477
- FOGHORN THERAPEUTICS INC · COM · 344174107 · shares: $61,849,706
- SERES THERAPEUTICS INC · COM NEW · 81750R201 · shares: $9,119,658
Reported holdings
7 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| GENERATE BIOMEDICINES INC | COM SHS | 370920100 | — | 62,673,117 shares | $1,057,295,483 |
| MODERNA INC | COM | 60770K107 | — | 4,628,225 shares | $324,114,597 |
| SANA BIOTECHNOLOGY INC | COM | 799566104 | — | 25,001,856 shares | $87,256,477 |
| FOGHORN THERAPEUTICS INC | COM | 344174107 | — | 12,674,120 shares | $61,849,706 |
| SERES THERAPEUTICS INC | COM NEW | 81750R201 | — | 733,207 shares | $5,785,004 |
| SERES THERAPEUTICS INC | COM NEW | 81750R201 | — | 422,643 shares | $3,334,654 |
| MODERNA INC | COM | 60770K107 | — | 3,924 shares | $274,798 |